Building ROS2 Rolling from Source for rclUE

Install Python deps (if you can, use the ROS2 debian versions of these instead!)

pip3 install colcon-common-extensions rosinstall-generator vcstool
sudo pip3 install rosdep

Clone the required repos which consists of Core, rclc and some interfaces:

rosinstall_generator --rosdistro rolling ros_core rclc geographic_msgs example_interfaces --deps > rolling.repos
mkdir src
vcs import src < rolling.repos

Install rosdeps:

sudo rosdep init
rosdep update
rosdep install --rosdistro rolling --from-paths src --ignore-src -y --skip-keys "fastcdr rti-connext-dds-6.0.1 urdfdom_headers"